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revision 1.81 by tjl, Thu Nov 28 15:41:42 2002 UTC revision 1.82 by tjl, Thu Nov 28 17:18:31 2002 UTC
# Line 228  olano98pixelflow,mccool99textureshaders} Line 228  olano98pixelflow,mccool99textureshaders}
228  In this article, we apply texture shading to obtain a large number  In this article, we apply texture shading to obtain a large number
229  of unique textures for distinguishing virtual objects.  of unique textures for distinguishing virtual objects.
230    
231    \cite{ware95texture}
232    
233  %  %
234  % Used for  % Used for
235  %     Aid to visualizing surfaces\cite{schweitzer83texturing},  %     Aid to visualizing surfaces\cite{schweitzer83texturing},
# Line 304  should be correlated so as to maximize t Line 306  should be correlated so as to maximize t
306  of the connected features  of the connected features
307  (e.g. pixels on a small area should correlate enough to  (e.g. pixels on a small area should correlate enough to
308  facilitate perception of contours).  facilitate perception of contours).
309    
310  In a sense, the perception model should invert the  In a sense, the perception model should invert the
311  visual processing to produce a unique background from  visual processing to produce a unique background from
312  a random vector seeded by the identity.  a random vector seeded by the identity.
313    This type of approach has been used by Ware and Knight\cite{ware95texture}, for inverting the earliest stage of the visual system,
314    the spatial frequency detectors, in order to place
315    information
316    in the texture channel. Their goals are in more conventional
317    visualization...
318    
319  %distinguishability: should produce random vector in brain  %distinguishability: should produce random vector in brain
320  %    (perception model in Fig.~\ref{fig-perceptual}) -- saving of bits  %    (perception model in Fig.~\ref{fig-perceptual}) -- saving of bits

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